Although not significant, a small increase in IFN production was rather detected in pre- versus non-infected poly(I:C)-treated MEFs, reflecting most likely a contribution of the cytokine production triggered for 36 h by the parvovirus infection (see Figure 1B) to the one produced by poly(I:C) transfection (Figure 11D). This evidence concerns the gene IFNA1 and Parvoviridae infectious disease.